Where to check for power
Thread Starter
10 Second Club
Joined: Nov 2005
Posts: 933
Likes: 75
Where to check for power I have a 2008 Jeep JK with a Motec conversion harness. LS3/6L80,
With the key in the ON position, all the dash lights are on, everything works as it should.
Key in cranking position, starter works, NO engine start.
It is getting fuel, crank sensor is good, cam sensor is good---no firing---I guess
Where can I check for power to the E38 PCM---or where can I splice in a 12volt wire to see if that is the problem.
It acts just like the power drops out when I switch to cranking.
With the key in the ON position, all the dash lights are on, everything works as it should.
Key in cranking position, starter works, NO engine start.
It is getting fuel, crank sensor is good, cam sensor is good---no firing---I guess
Where can I check for power to the E38 PCM---or where can I splice in a 12volt wire to see if that is the problem.
It acts just like the power drops out when I switch to cranking.
Your going to have to find where the 12v IGN wire is connected for the motec harness. Its most likely connected to the wrong ignition wire thats not hot during cranking. Once you find that wire you can connect to 12v to test if you wanted.
Thread Starter
10 Second Club
Joined: Nov 2005
Posts: 933
Likes: 75
Thanks! Is that you, Lorenz ? You tuned my GTO years ago
This thing is kicking my butt. I had one of his old harness setups,but had a lot of problems. He sent me the new Can bus setup and harness and now I have this one problem (big) that I can't seem to get solved. I will see if I can figure out how the 12 volts is applied.
This thing is kicking my butt. I had one of his old harness setups,but had a lot of problems. He sent me the new Can bus setup and harness and now I have this one problem (big) that I can't seem to get solved. I will see if I can figure out how the 12 volts is applied.
Thanks! Is that you, Lorenz ? You tuned my GTO years ago
This thing is kicking my butt. I had one of his old harness setups,but had a lot of problems. He sent me the new Can bus setup and harness and now I have this one problem (big) that I can't seem to get solved. I will see if I can figure out how the 12 volts is applied.
This thing is kicking my butt. I had one of his old harness setups,but had a lot of problems. He sent me the new Can bus setup and harness and now I have this one problem (big) that I can't seem to get solved. I will see if I can figure out how the 12 volts is applied.
Thread Starter
10 Second Club
Joined: Nov 2005
Posts: 933
Likes: 75
I found out that GM used a short extension on the cam sensor harness that reversed two of the wires. The new harness did not have that as well as the old harness. I guess the old one was just spliced in somewhere. I reversed A and C on the new harness and it fired up. What a bunch of crap!!! I just happened to be reading on some wiring blog and that problem came up for somebody else.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
